Improvement in lamp-chimney holders



l. H. IRWIN.

Lamp-Chimney Holders.

no. 134,063. Patented Dec.17,1872.

1 m f jg AM. PIIUTO-LITHOGIMFHIC cmLr/osaunuzis FROEfSSJ JOHN H. IRWIN,on PHILADELPHIA, PENNSYLVANIA.

iMPROVEMENT IN LAMP-CHiMNEV HOLDERS.

Specification forming part of Letters Patent No. 3 1,063, dated December17, 1872.

To all whomtt may concern:

Be it known that I, JOHN H. IRWIN, of

Philadelphia, in the county of Philadelphia and State of Pennsylvania,have invented a new and useful Improvement in .Ohimney- Holders forLamps; and I do hereby declare the following to be a full, clear, andexact description of the same, reference being-had to the accompanyingdrawing, in which- Figure 1 is an elevation, showing my device inposition; and Fig. 2 shows the manner of constructing the metalliccap-supporting elastic wires.

This invention relates to that class of lamps which consume volatileoils, and therefore require the use of a chimney; and it consists in adevice arranged to support and hold the chimney at a point near itsupper end for the purpose of obtaining greater steadiness and securityagainst accidental displacement, as well as to avoid the shadow thrownaround the base of the lamp by devices arranged to hold and secure thechimney by its lower end.

That others may fully understand my in vention I will particularlydescribe it.

Heretofore lampehimneys have been held in position by fastenings locatedat their lower ends, and such fastenings were always liable toobjection, because the chimneys were never uniform in size or shape, andtherefore said fastenings were never sure to hold the chimney firmly andsteadily. Said fastenings either surround and inclose the bottom of thechimney or require an enlargement thereof, and in either case theholding devices enlarge the.

adow around the base of the lamp. In the drawing accompanying and makinga part of this specification, A represents a' glass chimney seated uponthe top of the burner B, no part of said seat being larger than thebottom of said chimney, which is not surrounded or inclosed thereby. Ois a metallic band surrounding the top of the chimney A, and connectedto the base of the burner B or some other convenient part of the .ofbreakage by unequal expansion.

lamp by the wires D. By these means the chimney may be securely held inproper position with respect to the burner and flame, with nopossibility of accidental displacement without violence, with completesteadiness, and without any shadow in addition to that cast by theoil-pot and base of the lamp.

In order to adapt the holder to the variations in size between differentchimneys, it is required to impart elasticity to the chimneyholder; andthis may be done by means of the springs c 0 along the edge of the band0, or by the elasticity of the wires D, the band (J then being formed soas to press downward upon the upper end of the chimney A. ,It isadvantageous to shorten the chimney A as much as possible so as toincrease the facility of cleaning it, and also decrease the" liabilityThey have heretofore been made partly of glass and partly of metal.

hen I employ a metallic cap, E, the wire D is made continuous, as shownin the drawing, Fig. 2, and has suflicicnt elasticity to permit said capto be turned over sidewise, sufficiently far to permit the removal ofthe chimney.

Having described my invention, what I claim as new is-- 1. An elasticchimney-holder arranged to grasp and hold the chimney at ornear itsupper end, in combination with a seat, to keep the bottom of the chimneyin place, substan tially asand for the purpose set forth.

2. The removable cap E, in combination with holder-wires D extending upfrom the base of the burner and the chimney-glass A, substantially assetforth.

In testimony that I claim the above as my invention witness my hand.

' J. H. IRWIN.

Witnesses:

THos. L. RICART, GEo. O. GODDARD.

